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CVE-2026-61547 is a heap-based buffer overflow in rabbitmq-c, as distributed in librabbitmq. The public amqp_send_frame() API improperly handles serialization of an oversized AMQP_FRAME_BODY, allowing an application-provided oversized body frame to cause a heap out-of-bounds write. The flaw can crash the affected process and corrupt memory.
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A heap buffer overflow in rabbitmq-c's amqp_send_frame() API caused by insufficient validation when serializing oversized AMQP_FRAME_BODY frames. The advisory lists a CVSS v3 score of 9.8 for this vulnerability. Updated FreeBSD packages are available; Nessus detects affected installations using self-reported version information rather than testing exploitation.
A critical network-accessible vulnerability affecting librabbitmq packages in Echo/Debian-based environments. It is rated CVSS v3 9.8 and is remediated by upgrading librabbitmq and related packages to version 0.11.0-1+deb12u3 or later.
A vulnerability addressed by Ubuntu Security Notice USN-8724-1 for the listed Ubuntu RabbitMQ C client packages.
A heap buffer overflow in rabbitmq-c/librabbitmq's amqp_send_frame() API when serializing an oversized AMQP_FRAME_BODY, allowing an application passing an oversized frame to cause a crash and memory corruption.
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Cross-references every affected SKU, including bundled OEM variants.
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